
.fullscreen-button {
    position: absolute;
    z-index: 2147483647; /* Max z-index */
    background-color: rgba(0, 0, 0, 0.5);
    color: white;
    border: none;
    border-radius: 5px;
    padding: 8px 12px;
    cursor: pointer;
    font-size: 14px;
    opacity: 0.7;
    transition: opacity 0.3s ease;
    visibility: hidden; /* Controlled by JS */
}

.fullscreen-button:hover {
    opacity: 1;
}
